D, in both animals, the infants are hatched from an egg outside the mother.
Answer:
0.175mol
Explanation:
Molarity of a solution can be calculated thus:
Molarity (M) = number of moles (n) / volume (V)
According to the information provided in this question, volume of NH4OH = 0.125L, molarity = 1.4M
Using; Molarity = n/V
1.4 = n/0.125
n = 0.175mol
Answer:
Mass = 2.7 g
Explanation:
Given data:
Number of moles of C₅H₁₂ = 0.9249 mol
Mass of water = ?
Solution:
Chemical equation:
C₅H₁₂ + 8O₂ → 5CO₂ + 6H₂O
Now we will compare the moles of water with pentane.
C₅H₁₂ : H₂O
1 : 6
0.9249 : 1/6×0.9249= 0.15 mol
Mass of water:
Mass = number of moles × molar mass
Mass = 0.15 mol × 18 g/mol
Mass = 2.7 g
Fractional distillation is a method for separating a liquid from a mixture of two or more liquids. For example, liquid ethanol can be separated from a mixture of ethanol and water by fractional distillation. This method works because the liquids in the mixture have different boiling points.